diff mbox series

[V2,02/12,net-next] qca_spi: Improve SPI IRQ handling

Message ID 20231218232639.33327-3-wahrenst@gmx.net (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series qca_spi: collection of improvements | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1115 this patch: 1115
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang fail Errors and warnings before: 12 this patch: 12
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1142 this patch: 1142
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 44 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Stefan Wahren Dec. 18, 2023, 11:26 p.m. UTC 
The functions qcaspi_netdev_open/close are responsible of request &
free of the SPI interrupt, which wasn't the best choice because
allocation problems are discovered not during probe. So let us split
IRQ allocation & enabling, so we can take advantage of a device
managed IRQ.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
---
 drivers/net/ethernet/qualcomm/qca_spi.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

--
2.34.1

Comments

Jacob Keller Dec. 20, 2023, 10:21 p.m. UTC | #1 
On 12/18/2023 3:26 PM, Stefan Wahren wrote:
> The functions qcaspi_netdev_open/close are responsible of request &
> free of the SPI interrupt, which wasn't the best choice because
> allocation problems are discovered not during probe. So let us split
> IRQ allocation & enabling, so we can take advantage of a device
> managed IRQ.
> 
> Signed-off-by: Stefan Wahren <wahrenst@gmx.net>

Nice cleanup.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
index fc272ca7bdca..294d4ee3b38f 100644
--- a/drivers/net/ethernet/qualcomm/qca_spi.c
+++ b/drivers/net/ethernet/qualcomm/qca_spi.c
@@ -687,7 +687,6 @@  static int
 qcaspi_netdev_open(struct net_device *dev)
 {
 	struct qcaspi *qca = netdev_priv(dev);
-	int ret = 0;

 	if (!qca)
 		return -EINVAL;
@@ -697,13 +696,7 @@  qcaspi_netdev_open(struct net_device *dev)
 	qca->sync = QCASPI_SYNC_UNKNOWN;
 	qcafrm_fsm_init_spi(&qca->frm_handle);

-	ret = request_irq(qca->spi_dev->irq, qcaspi_intr_handler, 0,
-			  dev->name, qca);
-	if (ret) {
-		netdev_err(dev, "%s: unable to get IRQ %d (irqval=%d).\n",
-			   QCASPI_DRV_NAME, qca->spi_dev->irq, ret);
-		return ret;
-	}
+	enable_irq(qca->spi_dev->irq);

 	/* SPI thread takes care of TX queue */
 	kthread_unpark(qca->spi_thread);
@@ -720,7 +713,7 @@  qcaspi_netdev_close(struct net_device *dev)
 	kthread_park(qca->spi_thread);

 	qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0, wr_verify);
-	free_irq(qca->spi_dev->irq, qca);
+	disable_irq(qca->spi_dev->irq);

 	return 0;
 }
@@ -987,6 +980,15 @@  qca_spi_probe(struct spi_device *spi)

 	spi_set_drvdata(spi, qcaspi_devs);

+	ret = devm_request_irq(&spi->dev, spi->irq, qcaspi_intr_handler,
+			       IRQF_NO_AUTOEN, qca->net_dev->name, qca);
+	if (ret) {
+		dev_err(&spi->dev, "Unable to get IRQ %d (irqval=%d).\n",
+			spi->irq, ret);
+		free_netdev(qcaspi_devs);
+		return ret;
+	}
+
 	ret = of_get_ethdev_address(spi->dev.of_node, qca->net_dev);
 	if (ret) {
 		eth_hw_addr_random(qca->net_dev);